TLS supported groups

6399,001d,0017,0018

first seen 2026-10-15 07:32 · last seen 2026-10-15 16:50 · JSON

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Groups in wire order6399 (X25519Kyber768Draft00 (OBSOLETE)), 001d (x25519), 0017 (secp256r1), 0018 (secp384r1)
Group count4
GREASE count0

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
q13d0311h3_55b375c5d22e_5a1f323ef56d Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.11

HTTP request (JA4H)

fingerprintco-occurrences
ge30nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 152.0.7977.83, edge 151.0.4129.93, +37 more.The fingerprint page shows the full measured match list. More on the catalog.5
ge30nr13enus_0c2c1d640f3e_000000000000_0000000000002
ge30nr12enus_f373c1189b47_000000000000_0000000000002
ge30nr14enus_00c893c2b404_000000000000_0000000000001
ge30nr12enus_c0858481ddaa_000000000000_0000000000001

QUIC transport params

fingerprintco-occurrences
q13_6e548a1139c99
q12_4b72b12b46e7 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chromium 131.0.6778.33.The fingerprint page shows the full measured match list. More on the catalog.2

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.3611

Country

fingerprintco-occurrences
NL · Netherlands11

Network (ASN)

fingerprintco-occurrences
AS395092 · Shock Hosting LLC11

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
t13d1516h2_8daaf6152771_02713d6af8622